/Engine/Source/Runtime/Engine/Classes/Engine/AssetManager.h
Call to start acquiring a list of chunks
virtual void AcquireChunkList ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & ChunkList, FAssetManagerAcquireResourceDelegate CompleteDelegate, [EChunkPriority::Type](API\Runtime\Core\GenericPlatform\EChunkPriority__Type) Priority, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FStreamableHandle](API\Runtime\Engine\Engine\FStreamableHandle) > StalledHandle )